Linex Triangular Scale Ruler 1:1-500 30cm White LXH 312 LX10730
Rotring Ruler Triangular Reduction Scale 1 Architect 1:10 to 1:1250 with 2 Coloured Flutings Ref S0220481 - ASAP Distribution - Film and TV Consumables Suppliers
White 30cm Linex Flat Scale Ruler 1:1-500 (Comes with colour coded inserts for ease
Rotring Triangular Reduction Scale Ruler 4 Architect 1-10 to 1-500 with 2 Coloured Flutings Ref S0220641 - S0220641 - 04006856802221 - Officestore UK